From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932180AbWFMXpx (ORCPT ); Tue, 13 Jun 2006 19:45:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932236AbWFMXpw (ORCPT ); Tue, 13 Jun 2006 19:45:52 -0400 Received: from web25218.mail.ukl.yahoo.com ([217.146.176.204]:5208 "HELO web25218.mail.ukl.yahoo.com") by vger.kernel.org with SMTP id S932180AbWFMXpw (ORCPT ); Tue, 13 Jun 2006 19:45:52 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.it; h=Message-ID:Received:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type; b=OYfZTIXU1bXb5tCbr4lDo/i67khayVW8NnA7RcJcTzFzvM9lcTMRmIQD/rvOIjh1KXvxw1V+WktDiIaOxr9uoG6pF+8bxr3b5F3PLkKpJwLS6ySr0pIZRfxLpzuJECTI5s2NQyMJDZOA+PMiBIHVaihwlhVQARfjEABtxrae2fk= ; Message-ID: <20060613234551.69651.qmail@web25218.mail.ukl.yahoo.com> Date: Wed, 14 Jun 2006 01:45:51 +0200 (CEST) From: Paolo Giarrusso Subject: Re: [UML] Problems building and running 2.6.17-rc4 on x86-64 To: Jeff Dike Cc: user-mode-linux-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org In-Reply-To: <20060613182129.GA4619@ccure.user-mode-linux.org> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Jeff Dike ha scritto: > On Tue, Jun 13, 2006 at 11:57:18AM -0300, Alberto Bertogli wrote: > > I just wanted to report that this went away when trying > 2.6.17-rc6 as a > > host. It also works fine as a guest (after I patch it with > > > http://user-mode-linux.sourceforge.net/work/current/2.6/2.6.17-rc4/patches/jmpbuf > > so that it builds). > > Besides, the random segfault problems I had with previous guests > > versions also seem to be fixed. > These two problems are related, and were both on the host. Bodo > Stroesser reported a while ago that ptrace, by returning via sysret > rather than iret, could cause register corruption when tracing > sigreturn. > The UML crash seems to have been caused by the fix to that problem. If that problem has been fixed, this would imply that SKAS should work on x86-64... or not? Well, I remember that problem being on IA32 emulation and IA32 wasn't included in the patch (for what I can see). Can you ask more information about this? Also, could you verify if at least with noprocmm and a host SKAS-V9 it works? Two things are to check: * Uml64 should use /proc/mm64 (unimplemented) * Uml64 should use the right version of PTRACE_FAULTINFO (I don't remember what I did, if I introduced PTRACE_EX_FAULTINFO or if I directly added the missing trap_no field in PTRACE_FAULTINFO; please verify). I won't have the time to check this at least until the 22 June. Bye Chiacchiera con i tuoi amici in tempo reale! http://it.yahoo.com/mail_it/foot/*http://it.messenger.yahoo.com